Cartridge filters are termed as ‘edge’ filters, because of the fact that the_________________?

Related Mcqs:

1. In bag filters, filter fabrics are never made of__________________?

   A. Metallic wire woven mesh
   B. Polyester fibres
   C. Cotton fibres
   D. Nylon fibres

2. During agitation of liquids, the_________________?

   A. Froude number is independent for the curves between power number and Reynolds number in
   baffled system
   B. Power number becomes independent of impellers Reynolds number at high Reynolds number,
   but is dependent on the geometry of the impeller
   C. Froude number is used to account for the effect of surface (e.g., the centre vortex) on the
   power number
   D. All A., B. and C.

3. If radius of a batch basket centrifuge is halved & the r.p.m. is doubled, then the_________________?

   A. Linear speed of the basket is doubled
   B. Linear speed of the basket is halved
   C. Centrifugal force is doubled
   D. Capacity of centrifuge is increased

4. Weber number is significant and is concerned with the_________________?

   A. Solid-liquid mixing
   B. Liquid-liquid mixing
   C. Dispersion of liquid in liquid
   D. Suspension of solid in liquid

5. The constants (Kb, Kr and Kk) used in the laws of crushing (i.e., Bond’s law, Rittinger’s law and Kick’s law) depend upon the_________________?

   A. Feed material
   B. Type of crushing machine
   C. Both A. & B.
   D. Neither A. nor B.

6. In a roll crusher, the specific power consumption and the production rate is affected by the_________________?

   A. Reduction ratio
   B. Differential roll speed
   C. Both A. and B.
   D. Neither A. nor B.

7. A compressible cake has the_________________?

   A. Maximum porosity at the upstream side
   B. Maximum porosity at the filter medium
   C. Same porosity throughout the cake thickness
   D. None of these

8. Filtration should be stopped in a filter press, if the_________________?

   A. Cake becomes very dense
   B. Liquor stops flowing out to the discharge
   C. Filtration pressure rises suddenly
   D. Both B. & C.

9. Work index is defined as the_________________?

   A. Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of
   the product passes through a 100 micron screen
   B. Energy needed to crush one tonne of feed to 200 microns
   C. Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product
   passes a 200 mesh screen
   D. Energy needed to crush one ton of feed to 100 microns

10. In closed circuit grinding as compared to open circuit grinding, the_________________?

    A. Specific surface of product is more
    B. Product has lesser size uniformity
    C. Production rate at a given limiting size is lower
    D. Operation is economical